The protocol stack of ILP

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ +%%4UVEZ ೥݄೔ 5FDIOPMPHZ%FTJHO%JW5BJHB/BLBZBNB

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ͸͡Ίʹ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ࣗݾ঺հ! w 5FDIOPMPHZ%FTJHO%JWJTJPO4FOJPS&OHJOFFS w ιϑτ΢ΣΞΤϯδχΞ w খ͞ͳϕϯνϟʔˠौ୩ͷ*5ܥاۀˠ+BQBO%JHJUBM%FTJHO w ҰݴͰݴ͏ͱԿͰ΋԰͞Μɻاըɺઃܭɺ࣮૷ɺςετɺϦϦʔεɺӡ༻
w αʔόʔαΠυɺΫϥΠΞϯταΠυͳͲͷܦݧ͋Γ w ۀ຿ܥ΍εϚϗήʔϜͷαʔόʔαΠυʢ+BWB1FSM.Z42-౳ʣ w εϚϗήʔϜͷΫϥΠΞϯταΠυʢ6OJUZ$ʣ w *-1͸Ұࡢ೥͘Β͍͔Βڵຯ͕͋ͬͯௐ΂ͨΓ͍ͯ͠Δ w 8$ͷ*OUFSMFEHFS$PNNVOJUZ(SPVQʹࢀՃ w 3'$ʹҰ෦ίϯτϦϏϡʔτ w ձࣾͰ͸ϒϩοΫνΣʔϯܥͷϓϩδΣΫτʹࢀՃ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ϝϞΛऔΔ࣌ؒ͸ແବͳͷͰɺཧղ͢Δࣄʹूதͯ͠௖͚Ε͹ͱࢥ͍·͢ εϥΠυ͸ޙ΄Ͳެ։͠·͢ ϝϞΛऔΔඞཁ͸͋Γ·ͤΜ ͸͡Ίʹ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ͋Δఔ౓ͷલఏ஌͕ࣝͳ͍ͱ೉͍͠෦෼΋͋Δ͔΋͠Ε·ͤΜ ෼͔Βͳ͍෦෼͸࠙਌ձͳͲͰ࣭໰ͯ͠௖͚Ε͹ͱࢥ͍·͢ ࠓճͷൃද͸ɺ͜ͷ༷ͳํΛର৅ͱ͍ͯ͠·͢ ҉߸ࢿ࢈ʹ͍ͭͯ͋Δఔ౓ཧղ͍ͯ͠Δ ωοτϫʔΫʹ͍ͭͯ͋Δఔ౓ཧղ͍ͯ͠Δ ͕ɺ*-1ʹ͍ͭͯ͸͋·Γৄ͘͠ͳ͍ ͸͡Ίʹ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ͜ΕΒΛॱʹ͓࿩͠·͢ ࠓ೔͓࿩͢Δࣄ͸ԼهͰ͢ *-1ͱ͸ҰମԿͳͷ͔ʁ 3'$ͷ͓ख఻͍Λͨ͠࿩ *-1ͷશମ૾ͱ੹຿ ͸͡Ίʹ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ͜ΕΒΛͬ͘͟Γཧղͯ͠௖͚ͨͱͨ͠Βɺ͜ͷൃද͸੒ޭͰ͢ ࠓ೔ͷൃදͷ໨ඪ *-1ͷϓϩτίϧͷશମ૾ ͦΕͧΕͲͷ༷ͳ੹຿ʹͳ͍ͬͯΔ͔ ͸͡Ίʹ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ͕࣌ؒͳ͍ͷͰૣޱͰ͢Έ·ͤΜ͕ඈ͹͍ͯͧ͘͠ʂ ࠙਌ձͰϓϨθϯτʂ 4'ʹߦͬͨ࣌ʹ4UFGBOʹ΋Βͬͨ *-1εςοΧʔΛઌண໊ʹϓϨθϯτ ཉ͍͠ํ͸࠙਌ձͰ੠Λ͔͚͍ͯͩ͘͞ ͸͡Ίʹ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ *-1ͱ͸ҰମԿͳͷ͔ʁ ҰԠ͓͞Β͍

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ୆ாͱ͸ɺ؆୯ʹݴ͑͹ޱ࠲͕͋Γ࢒ߴ͕͋Δ༷ͳγεςϜͰɺϏοτίΠϯ΍ۜߦͷγεςϜͳͲ  Ձ஋ͱ͸ɺ͜͜Ͱ͸୆ாʹه࿥͞Εͨ࢒ߴΛࢦ͢ ϓϩτίϧͱ͸σʔλͷ΍ΓऔΓͷৄࡉΛऔΓܾΊͨ࢓༷ *-1͸௨৴ͷ࢓༷Ͱ͋ͬͯϓϩμΫτࣗମΛࢦ͢༁Ͱ͸ͳ͍ *-1 *OUFSMFEHFS1SPUPDPM ͱ͸ɺҰݴͰݴ͏ͱ ҟͳΔ୆ாؒͰ Ձ஋ΛҠಈ͢ΔͨΊͷϓϩτίϧ
*-1ͱ͸ҰମԿͳͷ͔ʁ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ *-1ͱ͸ҰମԿͳͷ͔ʁ ੈͷதʹ͸௨՟͕͍ͬͺ͍ʜɻ ؅ཧମ੍ʢ෼ࢄɾதԝʣ΋৭ʑɻ ͭ·Γ୆ா͕৭ʑ͋Δɻ ૬खʹεϜʔεʹ౉͢ͷ͸݁ߏେมɻ =
₹ ⒊ ԿͰͦΜͳ΋ͷ͕ඞཁͳͷʁ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ தԝ؅ཧ͞Εͨαʔόʔͷ୆ா͕͍͍ਓ΋͍Ε͹ɺ෼ࢄ؅ཧ͞Εͨ୆ா͕͍͍ਓ΋͍Δ ԁ͕͍͍ਓ͕͍Ε͹υϧ͕͍͍ਓ΋͍Δ͠ɺ๏ఆ௨՟Ͱ͸ͳ͍௨՟͕͍͍ਓ΋͍Δ ৭ʑͳਓ͕͍ΔͷͰɺ୯Ұͷ࢓૊ΈͰશͯΛ·͔ͳ͏ͷ͸ͪΐͬͱແཧ͋ΔͰɺͱ͍͏ࣄ جຊతͳࢥ૝ͱͯ͠ɺ શੈքͷਓ͕୯Ұͷ୆ாΛ࢖͏ͷ͸ ແཧ΍Ͱʜʂͱ͍͏લఏʹཱ͍ͬͯΔ *-1ͱ͸ҰମԿͳͷ͔ʁ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ͦͷલఏͰɺͳΜͱ͔Ձ஋Λ؆୯ʹ ૬खʹಧ͚ΒΕͳ͍͔ͳʁ *-1ͱ͸ҰମԿͳͷ͔ʁ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ Ձ஋ͷ؅ཧओମ΍୯Ґ͕ҟͳΔ৔߹ʹ҆શʹࣗ෼ͷՁ஋Λಧ͚͍ͨ ͜ͷσʔλͷ΍ΓऔΓΛ஥հͯ͘͠ΕΔͷ͕*-1 ྫ͑͹ɺ͜Μͳέʔε͕ߟ͑ΒΕΔ *-1ͱ͸ҰମԿͳͷ͔ʁ #5$ ԁ ϏοτίΠϯͷ෼ࢄ؅ཧ͞Εͨl୆ாz
ۜߦͷதԝ؅ཧ͞Εͨl୆ாz #͞ΜʹສԁૹΓ͍ͨΜ͚ͩͲɺ ๻͸ϏοτίΠϯ͔࣋ͬͯ͠ͳ͍Α ๻͸ԁ͕͍͍ͳ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ "͞Μ͕ίωΫλʹࢧ෷͏ɺίωΫλ͸#͞Μʹࢧ෷͏ ࣮ࡍ͸"͞Μ͸໘౗ͳࣄΛߟ͑ͳͯ͘΋#͞ΜʹՁ஋Λಧ͚ΒΕΔ ࠷ۙ͸ίωΫλͷࣄΛʮϊʔυʯͱݺͿ͜ͱ΋ ۩ମతʹ͸ʜ ྆ํʹޱ࠲ͷ͋ΔʮίωΫλʯ͕खॿ͚ *-1ͱ͸ҰମԿͳͷ͔ʁ Ledger
1 Account A Ledger 2 Account B Connector BTC/ԁ Bitcoin Ϩδϟʔ<#5$> ۜߦϨδϟʔ<ԁ> Account C1 Account C1 1BTC ૬౰ 0.9BTC ૬౰ A ͞ΜˠίωΫλ ίωΫλˠ#͞Μ ͜͜Ͱ͸ख਺ྉ͕ͱͳ͍ͬͯ·͕͢ɺ ͋͘·ͰྫͰ͋Γ΋ͬͱখ͘͞ͳΔ૝ఆͰ͢

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ίωΫλ͸૬ޓʹ઀ଓ͞Ε͓ͯΓɺ΢Σϒͷ༷ʹͳ͍ͬͯΔ ௚઀઀ଓ͞Ε͍ͯͳ͍ਓʹ΋Ձ஋Λಧ͚Δࣄ͕Ͱ͖Δ ͞Βʹʜ ඞཁʹԠͯ͡ෳ਺ͷίωΫλͰ࿈ଓతʹߦ͍ Ձ஋Λϗοϓ͍ͤͯ͘͞ *-1ͱ͸ҰମԿͳͷ͔ʁ Ledger
1 Account A Ledger 3 Account B Ledger 2 Account C2 Connector 1 BTC/XRP Connector 2 XRP/A-Bank A͞Μ g.crypto.btc.abc B ͞Μ g.jp.banks.a-bank.efg Bitcoin Ϩδϟʔ<#5$> ۜߦ̖Ϩδϟʔ<=> 931Ϩδϟʔ<931> Connector 3 Connector 4 Account C1 Account C1 Account C2

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ *-1ͱ͸ҰମԿͳͷ͔ʁ ୆ாʹΑΒͣՁ஋ΛΠϯλʔωοτ্Ͱ ૬खʹಧ͚Δࣄ͕Ͱ͖Δɻ ͜ΕΛՁ஋ͷΠϯλʔωοτɺ *OUFSOFUPG7BMVFͱݺΜͰ͍Δɻ VALUE VALUE
VALUE ࠃࡍతͳਤΛग़͢ͱ਎ۙʹײ͡ΒΕͳ͍͔΋͠Εͳ͍͕ɺࠃ಺Ͱ͋ͬͯ΋૬ख ͷ࢖͍ͬͯΔ୆ா͕ҧ͏ͱ͍͏͜ͱ͸Α͋͘Δ͠ɺΠϯλʔωοτ্Ͱࠃ֎ͷ αʔϏεΛڗड͢Δͱ͍͏ࣄ͸ී௨ʹ͋Δɻ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ 3'$ͷ͓ख఻͍Λͨ͠࿩

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ *-1ͷ࢓༷΋શͯެ։͞Ε͍ͯ·͢ IUUQTHJUIVCDPNJOUFSMFEHFSSGDT ͦ΋ͦ΋3'$ͱ͸ʁ ٕज़తͳ࢓༷Λهͨ͠υΩϡϝϯτͷࣄ શੈքʹެ։͞Εɺ୭Ͱ΋ӾཡͰ͖Δ 3'$ͷ͓ख఻͍Λͨ͠࿩

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ *-1ͷ3'$͸8$ͷ*OUFSMFEHFS1BZNFOUT$PNNVOJUZ(SPVQͷ3'$Ͱ͢ 3'$ͱݴͬͯ΋৭ʑ͋Δ *&5'ͷ3'$ʢΑ͘஌ΒΕ͍ͯΔ΋ͷʣ ͦͷଞͷ3'$ʢϓϩδΣΫτຖͷ΋ͷʣ 3'$ͷ͓ख఻͍Λͨ͠࿩

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ࣗ෼͕ཧղͨ͠಺༰Λ෼͔Γ΍͍͢ਤͱจষͰ࢒͢ࣄͰੈքʹߩݙͰ͖Δͱײͨ͡ 3'$͸جຊతʹӳޠͳͷͰͦͷ఺Ͱ΋ࣗ෼ͷ੒௕ʹ΋ܨ͕Δ Կނख఻͓͏ͱࢥͬͨͷ͔ʁ (JU)VCͷJTTVFͰ͓ख఻͍Λืू͍ͯͨ͠ ݸਓతʹϓϩτίϧͷ֊૚͕ཧղͮ͠Β͍ͱײ͍ͯͨ͡ 3'$ͷ͓ख఻͍Λͨ͠࿩

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ શମ૾Λ௫ΉͨΊͷ3'$͕3FMBUJPOTIJQCFUXFFO1SPUPDPMT ࠓ೔͸ओʹ͜ͷ͓࿩Ͱ͢ ࣮ࡍʹ͓ख఻͍ͨ͠΋ͷ %ZOBNJD$POpHVSBUJPO1SPUPDPM 3FMBUJPOTIJQCFUXFFO1SPUPDPMT 3PVUF#SPBEDBTUJOH1SPUPDPM 3'$ͷ͓ख఻͍Λͨ͠࿩

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ *-1ͷશମ૾ͱ੹຿

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ͜Ε͚ͩͩͱϓϩάϥϜͱͯ͠ͷಈ͖Λཧղ͢Δͷ͕೉͍͠ ΋͏গ͠஍ʹ଍ͷ͍ͭͨઆ໌͕ඞཁ Α͘ݟΔϓϩτίϧελοΫͷը૾ *-1ͷશମ૾ͱ੹຿

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ )BIB PL͓౴͑͠·͠ΐ͏ɻ Α͋͘Δٙ໰ ࣮ࡍ୭͕Ͳ͏઀ଓ͍ͯ͠Δͷ͔෼͔Βͳ͍ *1ϨΠϠʔͷͲ͜Ͱಈ͍͍ͯΔͷ͔෼͔Βͳ͍ ֤ϓϩτίϧͷσʔλߏ଄͕෼͔Βͳ͍ *-1ͷશମ૾ͱ੹຿
HJQIZ͔Βर͖ͬͯͨը૾

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ " ૹ৴ऀ͸ϊʔυʢίωΫλʣͱ#51ͷίωΫγϣϯΛ8FC4PDLFU্ʹ։͘ w *-1ύέοτΛྡͷϊʔυʹసૹ͢Δ # ૹ৴ऀ͸ϨδϟʔͱϨδϟʔઐ༻ͷ"1*ίωΫγϣϯΛ։͘ w Ϩδϟʔ͝ͱʹητϧϝϯτΛߦ͏ $
ૹ৴ऀ͸ड৴ऀͱ4141ͷίωΫγϣϯΛ)5514Ͱ։͘ w ҉߸ԽͷͨΊͷڞ௨ݤΛసૹͨ͠Γɺࢧ෷ઌͷ*-1ΞυϨεͳͲΛసૹ͢Δ *-1ͷશମ૾ͱ੹຿ ϙΠϯτ ίωΫγϣϯ͸େ͖̏ͭ͘ଘࡏ͢Δ Receiver Sender Node A Ledger A Node C Ledger B SPSP Server Node B Application (C) SPSP over HTTPS (B) Ledger specific connection (A) BTP over WebSocket

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ *-1ͷશମ૾ͱ੹຿ Sender Node A: g.node-a (13) Routing
Table Module Routing Table Account for Ledger B (11) Account Module (12) Bilateral Ledger IP layer connection (e.g. WebSocket) Interaction between programs Explanation of something Node B: g.node-a.child-b Routing Table Module Routing Table Account for Ledger B Account Module Bilateral Ledger (A) BTP over WebSocket (C) SPSP over HTTPS The identifier of nodes (g.xxx) is (3) ILP address Packet Data Structure BTP Packet ILP Packet (7) DCP Packet BTP Packet ILP Packet (8) RBP Packet The details (order, value type, length) are defined as (9) ASN.1. The ASN.1 structure is encoded in binary by (10) Canonical OER rule. (1) BTP Packet (2) ILP Packet (4) STREAM Packet (5) Application Packet Application Account for Ledger A Account Module Bilateral Ledger (4) STREAM Packet (14) Configuration Module (7) DCP Packet (6) SPSP information (8) RBP Packet Ledger B Account for Node A Account for Node B Payment Channel for Node A and B (B) Ledger specific connection (to receiver SPSP server) (1) BTP Packet (to Node C) (to Ledger A) ઌ΄Ͳͷશମ૾Λ֦େ͢Δͱ͜͏ͳΔ ͳΜ͚ͩͲɺશ෦આ໌͢Δͷ͸ݫ͍͠  Ұ൪େࣄͳʢͩͱࢥ͏ʣ#51ʹϑΥʔΧε

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ #51͸ྡͷϊʔυʹϖΠϝϯτ΍ητϧϝϯτͷ৘ใΛૹΔͨΊͷ΋ͷ #51ͷύέοτ͸಺෦ʹ*-1ύέοτΛ಺แ͍ͯ͠Δ  *-1ύέοτ͸಺෦ʹ453&". %$1 3#1ͷύέοτΛ಺แ͍ͯ͠Δ ύέοτͷߏ଄͸"4/Ͱఆٛ͞Ε͓ͯΓɺ$BOPOJDBM0&3ͰΤϯίʔσΟϯά͞ΕΔ ϙΠϯτύέοτͷߏ଄͸͜͏ͩ
*-1ͷશମ૾ͱ੹຿ Packet Data Structure BTP Packet ILP Packet (7) DCP Packet BTP Packet ILP Packet (8) RBP Packet The details (order, value type, length) are defined as (9) ASN.1. The ASN.1 structure is encoded in binary by (10) Canonical OER rule. (1) BTP Packet (2) ILP Packet (4) STREAM Packet (5) Application Packet w 453&".ͷ੹຿ w *-1ύέοτ͸ඇৗʹখ͞ͳ୯ҐͷՁ஋Ͱ΍ΓऔΓ͞ΕΔલఏͰɺͦΕΒΛͻͱ·ͱΊ ʹͯ͠େ͖ͳ୯ҐΛૹۚ͢ΔͨΊͷ؅ཧ΍ΞϓϦέʔγϣϯ૚ͷσʔλΛ΍ΓऔΓ͢Δ w *-1ͷ੹຿ w ࠷΋جຊతͳࢧ෷͍ͷ࠷খ୯Ґͷ৘ใͷ΍ΓऔΓΛߦ͏ w %$1ͷ੹຿ w %ZOBNJD$POpHVSBUJPO1SPUPDPM w ϊʔυΛηοτΞοϓ͢ΔͨΊͷ৘ใͷ΍ΓऔΓΛߦ͏ʢ*-1ΞυϨεͷઃఆͳͲʣ w 3#1ͷ੹຿ w 3PVUF#SPBEDBTUJOH1SPUPDPM w ϧʔςΟϯά৘ใΛަ׵͢ΔͨΊʹར༻͞ΕΔ

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ͝ࢀߟʹͯ͠௖͚Ε͹ͱࢥ͍·͢ ͜͜Ͱ͸શͯΛઆ໌Ͱ͖·ͤΜͰ͕ͨ͠ʜ *-3'$3FMBUJPOTIJQCFUXFFO1SPUPDPMT ʹ΋ͬͱৄ͘͠ॻ͍ͯ͋Γ·͢ *-1ͷશମ૾ͱ੹຿

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ͓·͚ɿ࠷৽ಈ޲

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ڵຯ͕͋Δํ͸&WBOͷCMPHΛνΣοΫ ࠷ۙͷ՝୊ײ͸ʜ ίωΫλΛεέʔϧ͢ΔͨΊͷߏ଄ ͜Ε·Ͱ͸8FC4PDLFUҰຊલఏͩͬͨ ཧ૝͸̍ͭͷ*-1ΞυϨεʹରͯ͠ ෳ਺ͷίωΫλΠϯελϯεΛཱͯΒΕΔߏ଄ ͓·͚ɿ࠷৽ಈ޲

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ڵຯ͕͋Δํ͸GPSVNJOUFSMFEHFSPSHΛνΣοΫ ͦͷଞʹ΋ʜ #51΍1MVHJOͷ࢓૊Έʹ͍ͭͯ΋ ϦϑΝΫλϦϯά͕ඞཁͰ͸ͳ͍͔ͱ͍͏ٞ࿦ ͓·͚ɿ࠷৽ಈ޲

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ڵຯ͕͋Δํ͸͝ࢀߟ௖͚Ε͹ͱࢥ͍·͢ ࠓ೔͸આ໌Ͱ͖·ͤΜͰ͕ͨ͠ʜ *-1Wʹ͍ͭͯ͸ผεϥΠυ͕͋Γ·͢ IUUQTTQFBLFSEFDLDPNEPSBHUJMQW ͓·͚ɿ࠷৽ಈ޲

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ ऴΘΓ

The protocol stack of ILP

The protocol stack of ILP

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*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ +%%4UVEZ ೥݄೔ 5FDIOPMPHZ%FTJHO%JW5BJHB/BLBZBNB

*-1ͷϓϩτίϧελοΫͱͦͷؔ࿈ੑ ͸͡Ίʹ

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